Wikipedia
Chumathang is a village in Leh District, Jammu and Kashmir in northern India on the bank of the Indus river.
It is 138 km (86 miles) southeast of Leh., and 41 km northwest of Nyoma, and 29 km (18 miles) from Kiari, where there is a small medical centre run by the Indian army. It lies in the banks of Indus River.
There are a few small dhabas or restaurants here making it a good spot to lunch and visit the hot springs which are about 2 km to the east. There is also a basic guesthouse and small store in the village. Near the hot springs is the Hot Spring Resort which has 4 basic rooms - one with a hot bath.
Travellers coming from the south will find that Chumathang is significantly lower than the Tsomoriri lake, making it a good stop for people suffering from altitude sickness.